Feat/case insensitivity (#44)

Author: Jamess-Lucass

src/Extensions/QueryableExtension.cs

@@ -61,10 +61,12 @@ public static (IQueryable, int?) Apply<T>(this IQueryable<T> queryable, Query qu
                 }
                 else
                 {
-                    where.Append($"{property} {_filterOperations[operand]} {value}");
+                    where.Append($"{property}.ToLower() {_filterOperations[operand]} {value}.ToLower()");
                 }
             }
 
+            Console.WriteLine(where.ToString());
+
             result = result.Where(where.ToString());
         }
 

tests/Tests.cs

@@ -219,7 +219,20 @@ public void Test_QueryWithFilterEquals()
         var (result, _) = _context.Users.AsQueryable().Apply(query, null);
         var sql = result.ToQueryString();
 
-        var expectedSql = _context.Users.AsQueryable().Where(x => x.Firstname == "goat").ToQueryString();
+        var expectedSql = _context.Users.AsQueryable().Where(x => x.Firstname.ToLower() == "goat".ToLower()).ToQueryString();
+
+        Assert.Equal(expectedSql, sql);
+    }
+
+    [Fact]
+    public void Test_QueryWithFilterEqualsCaseInsensitivity()
+    {
+        var query = new Query() { Filter = "firstname eq 'goat'" };
+
+        var (result, _) = _context.Users.AsQueryable().Apply(query, null);
+        var sql = result.ToQueryString();
+
+        var expectedSql = _context.Users.AsQueryable().Where(x => x.Firstname.ToLower() == "goat".ToLower()).ToQueryString();
 
         Assert.Equal(expectedSql, sql);
     }
@@ -232,7 +245,7 @@ public void Test_QueryWithFilterNotEquals()
         var (result, _) = _context.Users.AsQueryable().Apply(query, null);
         var sql = result.ToQueryString();
 
-        var expectedSql = _context.Users.AsQueryable().Where(x => x.Firstname != "goat").ToQueryString();
+        var expectedSql = _context.Users.AsQueryable().Where(x => x.Firstname.ToLower() != "goat".ToLower()).ToQueryString();
 
         Assert.Equal(expectedSql, sql);
     }
@@ -245,7 +258,7 @@ public void Test_QueryWithFilterEqualsAndEquals()
         var (result, _) = _context.Users.AsQueryable().Apply(query, null);
         var sql = result.ToQueryString();
 
-        var expectedSql = _context.Users.AsQueryable().Where(x => x.Firstname == "goat" && x.Lastname == "query").ToQueryString();
+        var expectedSql = _context.Users.AsQueryable().Where(x => x.Firstname.ToLower() == "goat".ToLower() && x.Lastname.ToLower() == "query".ToLower()).ToQueryString();
 
         Assert.Equal(expectedSql, sql);
     }
@@ -258,7 +271,7 @@ public void Test_QueryWithFilterEqualsAndNotEquals()
         var (result, _) = _context.Users.AsQueryable().Apply(query, null);
         var sql = result.ToQueryString();
 
-        var expectedSql = _context.Users.AsQueryable().Where(x => x.Firstname == "goat" && x.Lastname != "query").ToQueryString();
+        var expectedSql = _context.Users.AsQueryable().Where(x => x.Firstname.ToLower() == "goat".ToLower() && x.Lastname.ToLower() != "query".ToLower()).ToQueryString();
 
         Assert.Equal(expectedSql, sql);
     }
@@ -287,7 +300,7 @@ public void Test_QueryWithFilterContainsAndEquals()
         var sql = result.ToQueryString();
 
         var expectedSql = _context.Users.AsQueryable()
-            .Where(x => x.Firstname.Contains("goat") && x.Lastname == "query")
+            .Where(x => x.Firstname.Contains("goat") && x.Lastname.ToLower() == "query".ToLower())
             .ToQueryString();
 
         Assert.Equal(expectedSql, sql);
@@ -302,7 +315,7 @@ public void Test_QueryWithFilterContainsOrEquals()
         var sql = result.ToQueryString();
 
         var expectedSql = _context.Users.AsQueryable()
-            .Where(x => x.Firstname.Contains("goat") || x.Lastname == "query")
+            .Where(x => x.Firstname.Contains("goat") || x.Lastname.ToLower() == "query".ToLower())
             .ToQueryString();
 
         Assert.Equal(expectedSql, sql);
@@ -317,7 +330,7 @@ public void Test_QueryWithFilterEqualsWithConjunction()
         var sql = result.ToQueryString();
 
         var expectedSql = _context.Users.AsQueryable()
-            .Where(x => x.Firstname == "goatand")
+            .Where(x => x.Firstname.ToLower() == "goatand".ToLower())
             .ToQueryString();
 
         Assert.Equal(expectedSql, sql);
@@ -332,7 +345,7 @@ public void Test_QueryWithFilterEqualsWithConjunctionAndSpaces()
         var sql = result.ToQueryString();
 
         var expectedSql = _context.Users.AsQueryable()
-            .Where(x => x.Firstname == " and " || x.Lastname == " and or ")
+            .Where(x => x.Firstname.ToLower() == " and ".ToLower() || x.Lastname.ToLower() == " and or ".ToLower())
             .ToQueryString();
 
         Assert.Equal(expectedSql, sql);
@@ -347,7 +360,7 @@ public void Test_QueryWithFilterCustomJsonPropertyName()
         var sql = result.ToQueryString();
 
         var expectedSql = _context.Users.AsQueryable()
-            .Where(x => x.UserName == "John")
+            .Where(x => x.UserName.ToLower() == "John".ToLower())
             .ToQueryString();
 
         Assert.Equal(expectedSql, sql);
@@ -362,7 +375,7 @@ public void Test_QueryWithFilterCustomColumnName()
         var sql = result.ToQueryString();
 
         var expectedSql = _context.Users.AsQueryable()
-            .Where(x => x.Gender == "Male")
+            .Where(x => x.Gender.ToLower() == "Male".ToLower())
             .ToQueryString();
 
         Assert.Equal(expectedSql, sql);